ASA2-12.000MHZ-L-T3

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Oscillators are electrical, mechanical, or chemical devices that produce sound or electrical signals of a periodic, oscillating nature. The ASAs2-12.000MHZ-L-T3 is a type of oscillator. This article will discuss its application field and working principle.

Application Field

Specifically designed for use in mobile communication devices, the ASAs2-12.000MHZ-L-T3 is best for the GSM and CDMA standard. This is because it operates with a low current consumption, high frequency output, low noise, and well-defined oscillation. The internal phase-locked loop features also provide a stable and accurate oscillation. In addition to being used in mobile communication devices, the oscillator is also suitable for many other low power applications such as clock generators, PCI-bus interface, Ethernet, WLAN, and logic systems.

Working Principle

The ASAs2-12.000MHZ-L-T3 employs the Pierce Oscillator configuration which is a type of LC (Inductance-Capacitance) oscillator. In this circuit configuration, an amplifier is used along with an LC tank circuit. The LC tank circuit comprises an inductor (L) and a capacitor in parallel (C). The amplified AC signal is fed back to the input of the amplifier, whereupon constructive interference occurs at the frequency determined by the LC tank circuit and destructive interference occurs at other frequencies. This helps to amplify the desired frequency and provide a sustained oscillation of the voltage or current at that frequency.

The oscillator also employs a phase-locked loop (PLL) to help maintain a stable and accurate oscillation frequency. The PLL acts as a frequency selector by comparing the output of the oscillator with an external reference frequency. The PLL then applies a correction signal to adjust the output of the oscillator to the reference frequency. By using PLL, it is possible to reach a very precise output frequency even if a wide temperature range or supply voltage variations occur.

Conclusion

The ASAs2-12.000MHZ-L-T3 is a low power oscillator that is mainly used in mobile communication devices. It employs a Pierce Oscillator configuration which is a type of LC oscillator with an added phase-locked loop to help maintain a stable and accurate oscillation frequency. This oscillator also has a low current consumption, high frequency output, low noise, and well-defined oscillation, making it suitable for many other low power applications.

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